PT-2019-18265 · F5 · Big-Ip

Published 2019-12-23 · Updated 2019-12-30 · CVE-2019-6683

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions BIG-IP versions 11.5.2 through 11.6.5.1 BIG-IP versions 12.1.0 through 12.1.5 BIG-IP versions 13.1.0 through 13.1.3.2 BIG-IP versions 14.0.0 through 14.0.1 BIG-IP versions 14.1.0 through 14.1.2.2 BIG-IP versions 15.0.0 through 15.0.1.1

Description The issue affects BIG-IP virtual servers with Loose Initiation enabled on a FastL4 profile, potentially leading to excessive flow usage under certain conditions.

Recommendations For versions 11.5.2 through 11.6.5.1, consider disabling Loose Initiation on FastL4 profiles until a fix is available. For versions 12.1.0 through 12.1.5, consider disabling Loose Initiation on FastL4 profiles until a fix is available. For versions 13.1.0 through 13.1.3.2, consider disabling Loose Initiation on FastL4 profiles until a fix is available. For versions 14.0.0 through 14.0.1, consider disabling Loose Initiation on FastL4 profiles until a fix is available. For versions 14.1.0 through 14.1.2.2, consider disabling Loose Initiation on FastL4 profiles until a fix is available. For versions 15.0.0 through 15.0.1.1, consider disabling Loose Initiation on FastL4 profiles until a fix is available.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2019-6683

Affected Products

Big-Ip

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2019-6683 · Security Note
• https://support.f5.com/csp/article/K76328112 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-6683 · Vendor Advisory